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Expired Canadian patentCanada

Flushometer relief valve

CA 1316898 C · Owner: Sloan Valve Company · Inventors: Whiteside, John F.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Abstract of the Disclosure, This invention relates to a flexible diaphragm assembly for use in a flush valve having a hollow body an inlet, an, outlet, a valve seat formed in the body between the inlet and outlet, and an operating handle assembly. The diaphragm assembly includes a diaphragm adapted to be peripherally attached to the flush valve body and a barrel integral with the diaphragm. The barrel has a seal member on its exterior positioned for sealing engagement with the body valve seat. There is an annular valve seat on the interior of the barrel and a relief valve is positioned within the barrel and has a seat portion positioned to close upon the barrel valve seat. The relief valve …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted April 27, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 27, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 13, 1989
GrantedApril 27, 1993
Term endedApril 27, 2010
Patent numberCA 1316898 C
Classification (IPC)F16K31/14 +1 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedJuly 13, 1989Patent grantedApril 27, 1993Term endedApril 27, 2010

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.